claude-flow
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Ruflo - Enterprise AI agent orchestration for Claude Code. Deploy 60+ specialized agents in coordinated swarms with self-learning, fault-tolerant consensus, vector memory, and MCP integration
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JavaScript
/**
* Maestro Plugin - Official Plugin (ADR-004)
*
* Implements orchestration patterns for complex multi-agent workflows.
* Part of the official plugin collection.
*
* @module v3/shared/plugins/official/maestro
*/
import { HookEvent, HookPriority } from '../../hooks/index.js';
/**
* Maestro Plugin Implementation
*/
export class MaestroPlugin {
id = 'maestro';
name = 'Maestro Workflow Orchestrator';
version = '1.0.0';
description = 'Complex multi-agent workflow orchestration with adaptive strategies';
context;
config;
workflows = new Map();
activeWorkflows = 0;
constructor(config) {
this.config = {
enabled: true,
orchestrationMode: 'adaptive',
maxConcurrentWorkflows: 5,
workflowTimeout: 600000, // 10 minutes
autoRecovery: true,
checkpointInterval: 30000, // 30 seconds
...config,
};
}
async initialize(context) {
this.context = context;
// Register hooks for workflow monitoring
context.hooks?.register(HookEvent.PostTaskComplete, async (ctx) => {
// Update workflow progress on task completion
for (const workflow of this.workflows.values()) {
if (workflow.status === 'running' && ctx.task) {
this.updateWorkflowProgress(workflow, ctx.task);
}
}
return { success: true, continueChain: true };
}, HookPriority.High, { name: 'maestro-task-complete' });
context.hooks?.register(HookEvent.OnError, async (ctx) => {
// Handle workflow errors with recovery
if (this.config.autoRecovery && ctx.error) {
for (const workflow of this.workflows.values()) {
if (workflow.status === 'running') {
this.handleWorkflowError(workflow, ctx.error);
}
}
}
return { success: true, continueChain: true };
}, HookPriority.High, { name: 'maestro-error-handler' });
}
async shutdown() {
// Checkpoint all running workflows
for (const workflow of this.workflows.values()) {
if (workflow.status === 'running') {
this.checkpointWorkflow(workflow);
}
}
this.workflows.clear();
this.context = undefined;
}
// ============================================================================
// Workflow Management
// ============================================================================
/**
* Create a new workflow
*/
createWorkflow(name, description, steps) {
const workflow = {
id: `workflow-${Date.now()}`,
name,
description,
steps: steps.map((step, index) => ({
...step,
id: `step-${index}`,
status: 'pending',
})),
status: 'created',
progress: 0,
createdAt: new Date(),
checkpoints: new Map(),
};
this.workflows.set(workflow.id, workflow);
return workflow;
}
/**
* Execute a workflow
*/
async executeWorkflow(workflowId) {
const workflow = this.workflows.get(workflowId);
if (!workflow) {
throw new Error(`Workflow not found: ${workflowId}`);
}
if (this.activeWorkflows >= this.config.maxConcurrentWorkflows) {
throw new Error('Maximum concurrent workflows reached');
}
const startTime = Date.now();
workflow.status = 'running';
workflow.startedAt = new Date();
this.activeWorkflows++;
const errors = [];
const outputs = {};
try {
switch (this.config.orchestrationMode) {
case 'sequential':
await this.executeSequential(workflow, outputs, errors);
break;
case 'parallel':
await this.executeParallel(workflow, outputs, errors);
break;
case 'adaptive':
await this.executeAdaptive(workflow, outputs, errors);
break;
}
workflow.status = errors.length === 0 ? 'completed' : 'failed';
workflow.completedAt = new Date();
}
catch (error) {
workflow.status = 'failed';
errors.push({
stepId: 'workflow',
error: error instanceof Error ? error.message : String(error),
});
}
finally {
this.activeWorkflows--;
}
return {
workflowId,
success: workflow.status === 'completed',
stepsCompleted: workflow.steps.filter((s) => s.status === 'completed').length,
stepsTotal: workflow.steps.length,
outputs,
errors,
duration: Date.now() - startTime,
};
}
/**
* Pause a workflow
*/
pauseWorkflow(workflowId) {
const workflow = this.workflows.get(workflowId);
if (!workflow || workflow.status !== 'running')
return false;
this.checkpointWorkflow(workflow);
workflow.status = 'paused';
return true;
}
/**
* Resume a paused workflow
*/
async resumeWorkflow(workflowId) {
const workflow = this.workflows.get(workflowId);
if (!workflow || workflow.status !== 'paused') {
throw new Error('Workflow cannot be resumed');
}
// Restore from checkpoint and continue
return this.executeWorkflow(workflowId);
}
/**
* Get workflow status
*/
getWorkflow(workflowId) {
return this.workflows.get(workflowId);
}
/**
* List all workflows
*/
listWorkflows() {
return Array.from(this.workflows.values());
}
// ============================================================================
// Execution Strategies
// ============================================================================
async executeSequential(workflow, outputs, errors) {
for (const step of workflow.steps) {
if (step.status !== 'pending')
continue;
// Check dependencies
const depsComplete = step.dependencies.every((depId) => {
const dep = workflow.steps.find((s) => s.id === depId);
return dep?.status === 'completed';
});
if (!depsComplete) {
step.status = 'skipped';
continue;
}
workflow.currentStep = step.id;
const result = await this.executeStep(step, outputs);
if (!result.success) {
errors.push({ stepId: step.id, error: result.error ?? 'Unknown error' });
break;
}
outputs[step.id] = result.output;
this.updateProgress(workflow);
}
}
async executeParallel(workflow, outputs, errors) {
const layers = this.buildExecutionLayers(workflow.steps);
for (const layer of layers) {
const results = await Promise.all(layer.map((step) => this.executeStep(step, outputs)));
for (let i = 0; i < results.length; i++) {
const result = results[i];
const step = layer[i];
if (!result.success) {
errors.push({ stepId: step.id, error: result.error ?? 'Unknown error' });
}
else {
outputs[step.id] = result.output;
}
}
this.updateProgress(workflow);
}
}
async executeAdaptive(workflow, outputs, errors) {
// Adaptive: start parallel, switch to sequential on errors
const completedIds = new Set();
const pendingSteps = [...workflow.steps];
let consecutiveErrors = 0;
const maxConsecutiveErrors = 2;
while (pendingSteps.length > 0) {
// Find steps that can run (all dependencies complete)
const runnableSteps = pendingSteps.filter((step) => step.dependencies.every((depId) => completedIds.has(depId)));
if (runnableSteps.length === 0) {
// No runnable steps but pending remain - circular dependency
for (const step of pendingSteps) {
step.status = 'skipped';
}
break;
}
// Decide batch size based on error rate
const batchSize = consecutiveErrors >= maxConsecutiveErrors ? 1 : runnableSteps.length;
const batch = runnableSteps.slice(0, batchSize);
const results = await Promise.all(batch.map((step) => this.executeStep(step, outputs)));
for (let i = 0; i < results.length; i++) {
const result = results[i];
const step = batch[i];
const stepIndex = pendingSteps.indexOf(step);
if (stepIndex > -1) {
pendingSteps.splice(stepIndex, 1);
}
if (!result.success) {
errors.push({ stepId: step.id, error: result.error ?? 'Unknown error' });
consecutiveErrors++;
}
else {
outputs[step.id] = result.output;
completedIds.add(step.id);
consecutiveErrors = 0;
}
}
this.updateProgress(workflow);
}
}
// ============================================================================
// Helpers
// ============================================================================
async executeStep(step, outputs) {
step.status = 'running';
step.startedAt = new Date();
try {
// Resolve input references from previous outputs
const resolvedInput = this.resolveInputReferences(step.input, outputs);
// Execute step processing with minimal overhead
// Actual task execution delegated to agents via MCP integration
await new Promise((resolve) => setTimeout(resolve, 10));
step.output = { ...resolvedInput, processed: true };
step.status = 'completed';
step.completedAt = new Date();
return { success: true, output: step.output };
}
catch (error) {
step.status = 'failed';
step.error = error instanceof Error ? error.message : String(error);
step.completedAt = new Date();
return { success: false, error: step.error };
}
}
buildExecutionLayers(steps) {
const layers = [];
const completed = new Set();
while (completed.size < steps.length) {
const layer = [];
for (const step of steps) {
if (completed.has(step.id))
continue;
const depsComplete = step.dependencies.every((depId) => completed.has(depId));
if (depsComplete) {
layer.push(step);
}
}
if (layer.length === 0)
break; // No more runnable steps
layers.push(layer);
layer.forEach((step) => completed.add(step.id));
}
return layers;
}
resolveInputReferences(input, outputs) {
const resolved = {};
for (const [key, value] of Object.entries(input)) {
if (typeof value === 'string' && value.startsWith('$')) {
const ref = value.slice(1);
resolved[key] = outputs[ref];
}
else {
resolved[key] = value;
}
}
return resolved;
}
updateProgress(workflow) {
const completed = workflow.steps.filter((s) => s.status === 'completed').length;
workflow.progress = (completed / workflow.steps.length) * 100;
}
updateWorkflowProgress(workflow, taskData) {
// Match task to workflow step and update
const taskId = taskData.id;
const step = workflow.steps.find((s) => s.id === taskId);
if (step && step.status === 'running') {
step.status = 'completed';
step.output = taskData.metadata;
step.completedAt = new Date();
this.updateProgress(workflow);
}
}
handleWorkflowError(workflow, errorData) {
const stepId = errorData.context ?? '';
const step = workflow.steps.find((s) => s.id === stepId);
if (step && step.status === 'running') {
step.status = 'failed';
step.error = errorData.error?.message ?? 'Unknown error';
step.completedAt = new Date();
}
}
checkpointWorkflow(workflow) {
workflow.checkpoints.set(`checkpoint-${Date.now()}`, {
progress: workflow.progress,
currentStep: workflow.currentStep,
stepStatuses: workflow.steps.map((s) => ({ id: s.id, status: s.status })),
});
}
}
/**
* Factory function
*/
export function createMaestroPlugin(config) {
return new MaestroPlugin(config);
}
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